π-p Elastic Scattering at 2.26 GeVc
Abstract
The elastic scattering of negative pions on protons at 2.26 GeVc has been studied using the Lawrence Radiation Laboratory 72-in. hydrogen-filled bubble chamber. The elastic scattering cross section is found to be 8.91+/-0.24 mb. The forward diffraction peak is well fitted by an exponential in the square of the four-momentum transfer, and the slope is found to be 8.8+/-0.1 GeV-2. The differential cross section is parametrized in terms of three models: optical, strong-absorption, and two-slope. It is found that the two-slope model affords the best description of the data and also does very well in predicting the polarization data of other experiments. The best-fit parameters for all three models are given. In addition, the amplitudes associated with the best fits are given for the strong-absorption and the two-slope models.
- Publication:
-
Physical Review
- Pub Date:
- September 1968
- DOI:
- 10.1103/PhysRev.173.1403
- Bibcode:
- 1968PhRv..173.1403R